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5 Commits

Author SHA1 Message Date
egj 98fbf241d8 Regex fuzzer: identifier mutation 
Mutates a WGSL-like string by replacing a randomly-selected identifier
with a different randomly-selected identifier.

Change-Id: Iecf45ad2800677cf3609b30d415520e5f2a05ba0
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60561
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Alastair Donaldson <afdx@google.com>
Commit-Queue: Alastair Donaldson <afdx@google.com>
 2021-08-04 07:12:20 +00:00
egj b75e4b96a6 Regex fuzzer: Change the region boundaries 
Changes the interval boundaries to exclude the first delimiter
that encloses a region.

Change-Id: Ia9186e584d9038b4220cad11d418fa9881e51e8d
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60346
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Alastair Donaldson <afdx@google.com>
Commit-Queue: Alastair Donaldson <afdx@google.com>
 2021-08-02 20:56:39 +00:00
egj f5490c732d Regex fuzzer: region deletion and duplication 
Adds two transformations, one that deletes a random region enclosed
by a given delimiter and another one that duplicates a region by
inserting it at a position of the WGSL code after a delimiter.

Fixes: tint:1072.
Fixes: tint:1073.

Change-Id: Icb10a7f16a783d5eb8f75a48c4015eb87ea1d174
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60200
Reviewed-by: Alastair Donaldson <afdx@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Alastair Donaldson <afdx@google.com>
 2021-07-29 15:40:57 +00:00
Alastair Donaldson 1f0200a3ff Add gn support for regex fuzzer 
Allows the tint regex fuzzer to be built using gn, so that it can be
deployed on ClusterFuzz.

Fixes: tint:1075
Change-Id: I88f8bd0eefe3044483b66784cc32feebcdc63928
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60202
Auto-Submit: Alastair Donaldson <afdx@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Alastair Donaldson <afdx@google.com>
 2021-07-29 11:58:18 +00:00
egj cc6d5b464d Add regex fuzzer 
A fuzzer that mutates a WGSL code by finding two regions enclosed by
semicolons and swapping them randomly.

Change-Id: I5b14eb21fd2924227d05ac516f806c6e2efa6198
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/58395
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Alastair Donaldson <afdx@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Alastair Donaldson <afdx@google.com>
 2021-07-28 11:11:26 +00:00